Abstract: With a method for detecting variables in an outlet of a metallurgical vessel, different variables in the outlet are detected or measured by at least one coil surrounding the outlet channel and/or an induction coil of an induction heater as a monitoring system, wherein the variables relate to the slag portion when pouring out the metal melt, wear condition of refractory parts in the outlet channel, the solidified metal melt, flow rate and/or plugging mass in the outlet channel. After evaluation, a closure element for the outlet is actuated, heating of the metal in the outlet channel is activated and/or renewal of the outlet channel is triggered. In this way, optimum operation in the pouring of metal melt out of a vessel is simply achieved, wherein occurrence of irregularities are detected during the entire pouring, and pouring out of slag can be successfully prevented at the end of the pouring.

Abstract: Slide closure for a metallurgical vessel, with two compensation units I and II for equalizing overloads, which may result from the thermal extension and spreading of the fire-proof closure plate thicknesses conditional on manufacturing, and/or from the upper inner shell, wherein the inner shell can also be reduced during operation. The compensation unit I consists of a spring arrangement with fastening screws which can be moved away between the housing and a cover of the housing. The compensation unit II consists, for its part, of a spring arrangement with an insertion frame pressing against the lower closure plate, which insertion frame is fixed to the bottom of the housing with fastening screws.

Abstract: The invention relates to a batch for producing an unshaped refractory ceramic product, to a method for producing an unshaped refractory ceramic product, and to an unshaped refractory ceramic product produced by the method.

Abstract: The invention relates to a fire-resistant ceramic product, a batch for manufacturing a product of said type, and a process for manufacturing a product of said type.

Abstract: A ceramic refractory stopper, shaped as a rod with a total axial length LS, comprising a) a stopper body (12) of an axial length LB, a first end section (12U) of which being equipped with means to fasten the stopper body (12) to a raise and lowering device, and a second end section (12L) of which being followed by b) a dome-like stopper head (14) of an axial length LH, wherein c) the stopper body (12) features at least one outer planar surface section (P1, P2, P3), which extends along at least 50% of the axial length LB of the stopper body (12).

Abstract: The invention relates to a grain for production of a refractory product, to the use of such grains, to a refractory product, to a process for producing a refractory product and to a refractory product produced thereby.

Abstract: Method for determining the state of a fire-resistant lining of a vessel containing molten metal in particular in which maintenance data, production data, and wall thicknesses at least at locations with the highest degree of wear are measured or ascertained together with additional process parameters of at least one identical/similar vessel after the vessel has been used. The data is collected and stored in a data structure. A calculating model is generated from at least some of the measured or ascertained data or parameters, and the data or parameters are evaluated using the calculating model using calculations and subsequent analyses. Thus, related or integral ascertaining processes and subsequent analyses can be carried out, on the basis of which optimizations relating to both the vessel lining as well as the complete process of the molten metal in the vessel are achieved.

Abstract: The invention relates to a refractory ceramic gas purging element featuring an insert which was cast into a blind hole within a refractory gas permeable body, which insert is made of a refractory ceramic material and has a density different to that of the body.

Abstract: The present invention relates to a compound for making high-temperature-resistant or refractory molded bodies, made up of a mixture of: a refractory or high-temperature-resistant inorganic powder, granules and/or granulate, including a free-flowing compound or a powder made of carbon or also without carbon, a binder, the binder being made of a combination of tannin, lactose, fine-grained silica and aluminum powder, as well as the binder itself, and molded bodies produced from the compound including the binder, and a method of making same.

Abstract: Method and device for repairing the spout sleeve of a metallurgical vessel fitted securely within the refractory lining of the vessel in which the sleeve is repaired by applying mortar to the casting channel of the sleeve with a mortar dispenser inserted into the casting channel, which upon removing the mortar dispenser from the casting channel calibrates the latter over the entire length of the channel. The mortar dispenser is driven rotating coaxially to the casting channel during the mortar application and, after a defined time, is removed from the casting channel, still rotating. The method is particularly suitable for repairing the inner sleeve of a casting ladle with a slide closure adjoining the ladle spout, maintenance of which is automatically carried out in a maintenance station of the casting facility. Repair of the inner sleeve is also carried out automatically here during the maintenance of the slide closure.

Abstract: A method for repairing a refractory lining of a metallurgical vessel in the hot state. This repair takes place using a supplying apparatus. In addition, recording of at least the worn regions and monitoring of the repair are carried out by a monitoring device. Before, during and/or after the supplying of material, at least a partial region of the areas of the refractory lining of the vessel or the gunning jet is recorded photographically with visualization of the temperature ranges. This results in an evaluation with regard to different parameters such as properties, layer thickness and/or distribution of the supplied material. It has been demonstrated that visualization of the temperature ranges of the areas to be repaired and of the refractory material during supplying of material enables different parameters to be established very accurately, and as a result, optimal coating of the wall lining can be achieved.

Abstract: Slide closure unit on the spout of a metallurgical vessel, preferably a copper-anode furnace, includes a housing in which refractory closure plates, as well as at least one connecting refractory inner casing, are arranged. A removable induction heater is provided, having at least one induction coil surrounding the refractory inner casing outside of the housing. In this way, it is possible to constantly keep the melt located in the outlet channel of the spout sufficiently warm so that it does not freeze before and/or during the pouring of the melt, or that any frozen metal and/or slag can be melted in the spout.

Abstract: A sliding gate for a vessel containing molten metal is provided with a slide housing (1), a slide unit guided longitudinally therein and having a push rod (2), a mounting (5) and a linear drive (6), which is removably fastened in the latter and has a drive rod (4). This drive rod (4) can be connected to the push rod (2) of the slide unit by a coupling (3). The coupling (3) is designed in such a way that, when the linear drive (6) has been pushed into the mounting (5), it automatically couples by a movement of the drive rod (4) towards the slide unit, while it uncouples when the linear drive (6) is removed from the mounting (5), transversely in relation to the direction of movement of the drive rod (4). A locking device (7), which can be actuated by the linear drive (6) and interacts with the mounting (5) is provided here, by means of which the linear drive (6) after being pushed into the mounting (5) can be fixed in the latter and can be unlocked again before it is removed.

Abstract: A method for treating refractory ceramic products is described herein. The method includes providing a refractory ceramic product, comprising magnesia and at least one of the following salts: one or more alkali salts and one or more alkaline earth salts. The method also includes providing a water-based liquid, combining the refractory ceramic product with the liquid, and separating the refractory ceramic product and the liquid.

Abstract: The invention relates to a refractory ceramic product.

Abstract: With a method for detecting variables in an outlet of a metallurgical vessel, different variables in the outlet are detected or measured by at least one coil surrounding the outlet channel and/or an induction coil of an induction heater as a monitoring system, wherein the variables relate to the slag portion when pouring out the metal melt, wear condition of refractory parts in the outlet channel, the solidified metal melt, flow rate and/or plugging mass in the outlet channel. After evaluation, a closure element for the outlet is actuated, heating of the metal in the outlet channel is activated and/or renewal of the outlet channel is triggered. In this way, optimum operation in the pouring of metal melt out of a vessel is simply achieved, wherein occurrence of irregularities are detected during the entire pouring, and pouring out of slag can be successfully prevented at the end of the pouring.

Abstract: Slide closure for a container containing molten metal includes a housing part that can be fastened to the container and a slider unit that can be displaced longitudinally relative to it, into which a fireproof plate can respectively be inserted. The slider unit is held by holding units fastened to the housing part perpendicular to the slider unit such that it can be displaced longitudinally. The holding units are individually fastened releaseably to the housing part such that in the braced state of the slide closure, they can be released from the housing part in almost every position of the slider unit. In addition, the housing part has walls running close to the plate in the longitudinal direction and projections that protrude to the side, in which walls bearings of the individual holding units can be accommodated.

Abstract: Device for inserting a refractory block into a taphole structure of a metallurgical vessel, in particular a basic oxygen furnace wherein the refractory block is carried by a mounting unit and has a proximate end introducable into the taphole. A distal end with locking elements, which can be coupled to a locking plate of the vessel, is disposed at the outside of the taphole of the vessel. The refractory block can be introduced into the taphole structure until the locking elements of the mounting unit can be attached to and coupled with the coupling head with a manipulator. This mounting unit can be uncoupled with the manipulator, when the refractory block is mortared and fixed in the lining, whereby the mounting unit can be decoupled and removed solely out of the taphole to enable refractory block replacement and gunning of refractory material from the inside of the furnace more easily.

Abstract: Method for automatically replacing the spout nozzle of a slide closure with a robot for manipulating the slide closure with an appropriate apparatus, the spout nozzle being able to be clamped against the slide plate of the slide closure by a carrying ring that can be released by turning. During the changing procedure, the carrying ring is turned with a defined torque, by means of which the new spout nozzle is clamped with a likewise defined tension force against the slide plate. In this way, operational reliability of the slide closure is guaranteed, independently of any tolerance and other deviations. The apparatus for implementing the method includes a gripping lance with clamping jaws for manipulating the spout nozzle and a gripping ring with catches for manipulating the carrying ring. The gripping ring can be actuated by a hydraulic rotation cylinder. A pneumatic cylinder is used to actuate the gripping lance.

Abstract: To improve the position of a cylindrical ceramic hollow body the invention relates to a securing device for use with a gas purging brick, where the securing device has the following characteristics in its operational position: A base body which, with its bottom and a circumferential wall, defines a cylindrical space with a corresponding central longitudinal axis, the bottom features an opening whose longitudinal axis aligns with the central longitudinal axis the bottom features a ring-shaped channel which extends concentrically around the opening. at least an inner wall of the channel which is adjacent to the opening consists of a material which is plastically ductile under the application of pressure, a ring-shaped compact whose radial wall cross-section increases in size upwards from a lower free end, so that the inner wall of the channel deforms plastically, thereby reducing the cross section of the opening, after the compact is pressed into the channel.